I understand the desire to protect the cooler and I can't see that mesh making a huge difference in flow, especially once you're up at 100mph or whatever.
To play devil's advocate: wasn't BMW concerned with debris heading in there? Don't you think they would've tested for that, and if necessary, placed a grille or guard in there?
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Now: 2017 Corvette Grand Sport, 2021 AMG C63 S sedan
Past: 2011.5 M3 sedan ZCP
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